[Qgis-user] SOBRE OPENLAYERS , GOOGLE MAPS - GOOGLE SATELITE

Eddison eddisonjose at gmail.com
Thu Jul 7 05:52:59 PDT 2016 

Hola muchas gracias por todas sus aclaraciones y comentarios al respecto de
este tema. Voy a probar los archivos XML

saludos cordiales

Eddison

El 7 de julio de 2016, 6:46, Miguel Sevilla-Callejo [via OSGeo.org] <
ml-node+s1560n5275149h76 at n6.nabble.com> escribió:

> No te fíes de las imágenes ya vengan de uno u otro servicio (bing, mapbox
> o Google) si el proveedor es DigitalGlobe y la imagen es la misma (podría
> darse el caso) el desplazamiento y el error será igual. Unas están mejor
> ortorectificadas que otras.
>
> Adjunto archivos XML que debes de cargar como si fueran raster para ver
> las tiles con imágenes de alta resolución desde el servicio de mapbox y el
> de mapquest (este suele tener las mismas imágenes de bing). Recuerda que la
> proyección será EPSG:3857 (Pseudo Mercator).
>
> Un saludo
>
> --
> *Miguel Sevilla-Callejo*
>
> *Doctor in Geography*
> a. Associate Lecturer at Dpto. of Geography & Territorial Planning at
> University of Zaragoza
> b. Fellow at the Pyrenean Institute of Ecology - Spanish National Research
> Council
> c. Freelance consultant & researcher - Member #698, Spanish Professional
> Association of Geographers
>
> *Doctor en Geografía*
> a. Profesor asociado en el Dpto. de Geografía y Ordenación del Territorio
> de la Univ. de Zaragoza
> b. Colaborador del Instituto Pirenaico de Ecología - Consejo Superior de
> Investigaciones Científicas
> c. Consultor e investigador freelance - Colegiado 698 del Colegio Oficial
> de Geógrafos
>
> 2016-07-06 21:15 GMT+02:00 Eddison <[hidden email]
> <http:///user/SendEmail.jtp?type=node&node=5275149&i=0>>:
>
>> Hola Nicolas, si efectivamente, veo los desplazamientos, en ese caso
>> tampoco Bing Aerial están correctamente ortorectificadas? las de Mapbox si
>> lo están?
>>
>> Gracias por las aclaraciones!
>>
>> Saludos
>>
>> Eddison
>>
>>
>>
>>
>> El 6 de julio de 2016, 11:56, Nicolas Cadieux [via OSGeo.org] <[hidden
>> email] <http:///user/SendEmail.jtp?type=node&node=5275022&i=0>> escribió:
>>
>>> Bing vs Google
>>> Relief displacement.
>>>
>>>
>>> Mira el edificio blanco en las dos imágenes . El desplazamiento de las
>>> imágenes es muy visible en ambos casos (Google desde el sur - oeste, y Bing
>>> desde el sur-este).
>>> Nicolas
>>>
>>>
>>>
>>> ------------------------------
>>> From: [hidden email]
>>> <http:///user/SendEmail.jtp?type=node&node=5275011&i=0>
>>> To: [hidden email]
>>> <http:///user/SendEmail.jtp?type=node&node=5275011&i=1>
>>> Date: Wed, 6 Jul 2016 09:04:35 -0600
>>> Subject: Re: SOBRE OPENLAYERS , GOOGLE MAPS - GOOGLE SATELITE
>>>
>>> Ah ok, muchas gracias Nicolas por tu amable respuesta!
>>>
>>> Saludos
>>>
>>> Eddison
>>>
>>> El 6 de julio de 2016, 7:38, Nicolas Cadieux [via OSGeo.org] <[hidden
>>> email] <https:///user/SendEmail.jtp?type=node&node=5274975&i=0>>
>>> escribió:
>>>
>>> Holà,
>>>
>>> Si miras una imagen de google Earth, se puede ver fácilmente que los
>>> edificios y los árboles no están perfectamente derechos.  Se puede ver
>>> fácilmente la dirección del vuelo y el "nadar" o la posición abajo del
>>> satélite.   Se llama en inglés"relief displacement". Una imagen bien
>>> ortorectificada no debería ser así.   Google utiliza probablemente un
>>> proceso automático para rectificar las imágenes pero el trabajo es un
>>> trabajo estético.  Las imágenes de google están echos para mirar, no para
>>> el trabajo.  En general, la geo localización está buena pero la
>>> ortorectificación (same scale, no relief displacement) está mala.
>>>
>>> Perdona me por mi español, no lo escribo mucho.
>>>
>>> Nicolas
>>> On Jul 6, 2016 09:06, "Eddison [via OSGeo.org]" <[hidden email]> wrote:
>>>
>>> Hola, muchas gracias Matthias! muy amable de su parte!
>>>
>>> Si, eso crea mucha confusión ya que en internet en muchos sitios dice
>>> que no están ortorectificadas pero en la fuente que mencioné dice que si lo
>>> están!
>>>
>>> Saludos
>>>
>>> Eddison
>>>
>>> 2016-07-05 16:00 GMT-06:00 Matthias Kuhn-2 [via OSGeo.org] <<a
>>> href="/user/SendEmail.jtp?type=node&node=5274940&i=0">[hidden
>>> email]>:
>>>
>>> Hola Eddison
>>>
>>> Cuando traduzco esto
>>> "While Google’s aerial orthoimagery is provided in our publicly
>>> available Google Maps [...]"
>>>
>>>
>>> Me parece decir exactamente que están ortorecitificadas (pero que no se
>>> permite usarlos para un par de trabajos por razones legales, no técnicos).
>>>
>>> Saludos
>>> Matthias
>>>
>>> On 07/05/2016 11:14 PM, Eddison wrote:
>>>
>>> Hola, muchas gracias, es que estoy confundido, mira lo que se dice aquí:
>>>
>>> Why do I need to purchase a license to Google Imagery when it is available
>>> in the freely accessible Google Maps?
>>>
>>> While Google’s aerial orthoimagery is provided in our publicly available
>>> Google Maps, Google's Terms of Service permits consumers to use our basemap
>>> for visualization purposes only. Tracing, feature extraction, and creation
>>> of derivative works are strictly prohibited.
>>> https://support.google.com/mapsdata/answer/6255273?hl=en
>>>
>>> Entonces estoy confundido si las imágenes de Google Maps - Google Satelite
>>> Layer están ortorectificadas?
>>>
>>>
>>>
>>>
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>>> --
>>> Matthias Kuhn
>>> OPENGIS.ch - https://www.opengis.ch
>>> Spatial • (Q)GIS • PostGIS • Open Source
>>>
>>>
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>>
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